Too complicated - Holosun HS510C 1x0.91-1.2in Open Reflex Red Dot Sight

This sight APPEARS to be well made, but I didn't keep it long enough to find out. Too many "bells and whistles". I had to keep referring back to the owners manual to change from manual to automatic. Never got around to trying to change reticle pattern. Couldn't even begin to imagine how I would remember all this, or try to change the battery in a SHTF situation (I'm "old school"-KISS). Could not change brightness in manual mode. Automatic mode too dim when shooting from low light (indoors) to bright background (through window).